If the leak is what we really are about to watch Sunday night, then I want my theory to be the real one, and in my mind this would be it.
Here is my theory if you are interested.

Bob Kirkland is indeed killed by Reede Smith.Michael (Bob's twin brother), finds out that the Blake association is behind his beloved brother's death.This upsets him, in the point that he rebels against the association and Red John of course.
Michael (with the help of Visualize and Bret Stiles) managed to get sober, built a remarkable and unique personality. He is evil, no doubt, because he is the right hand of a serial killer.He gets angry learning about how and why his brother died, and he starts feeling guilty, because he realizes his mistakes.So, he approaches Jane, he tells him everything about the organization and the tattoo.He also tells Jane the name of Red John.(improvise here). For me that would be Partridge but whatever you like just put him in his position.Now, Jane knows who Red John is, but still he needs a master plan to make him reveal himself.He invites all the remaining suspects in his house.Partridge must act fast in order to keep his secret safe.Unfortunately for him, it's too late.No one dies in the explosion.Red John has a lot of links so he can easily dumb dead bodies with DNA evidence on them suggesting that the suspects are dead.The two alive ones (Bertram and Smith) remained alive so the game will continue.Stiles and Haffner are with RJ's part of course, because the Blake association and Visualize are helping each other with their goals, so one is obligated to help the other.Jane's reaction is immediate.He knows there is no way that Smith is RJ, especially after his confession.The guy passing by the interrogation room is Michael.Then Jane goes and reveals Bertram as RJ.The whole attention turns to Bertram.He runs away because if he doesn't he will possibly die by RJ or someone in the association.RJ is getting furious watching his whole work to be credited in Bertram, so he leaves a message that only Patrick could decode.It says that he is RJ and he wants to meet with him, both without any guns or backups.Jane agrees.Bertram appears in the church telling to Jane he is RJ.Of course he doesn't believe him.Then the real RJ walks into the church and kills Bertram while saying "An other thing I can't stand is when someone gets credits for my unique work."And then he appears wearing his classic cape and mask.On his side he has Lorelei,(she is not dead, there are enough clues to prove it: http://www.whoisredjohn.com/See-a-theory-Red-John/13493 .Lorelei was trying to kill RJ, when he figured it out, he persuade her that he didn't kill her sister and take her on his side again.Together they make the video,sometime after Jane finished the list)
Jane stares at him while he is extremely tense.(Like the season 2 finale). Neither RJ nor Lorelei are pointing him with their guns.PJ stays stunned, while the two walk all along the hall.All of a sudden, Michael makes his appearance this time at the side of Patrick.Red John says: 'Michael, I feel betrayed and impressed at the same time.Well done"
Michael answers 'You really shouldn't kill my brother"
Lorelei, while hearing these words starts to think about her sister again, and freezes.Jane seems so surprised for all the things that are happening at the same time.While RJ is some steps ahead of Lorelei, she is pointing him with her gun.RJ turns around and kill her.Then PJ gets the moment to take off his weapon.He manages to shoot RJ but not so bad that he manages to run away.Jane and Michael start to chase RJ.But when they arrive at the park there is a little surprise for them.They find themselves surrounded by people all wearing the same capes and masks as RJ does.Patrick loses sight over RJ because he becomes one with the crowd.Then they all start: 'Tyger, Tyger burning bright, in the forests of the night.What immortal hand or eye could frame thy fearful symmetry?"
Then they ask Patrick and Michael to throw their guns.They do it of course.Right after, RJ's voice saying "Step aside'.The crowd separates and RJ appears.
"You are a clever man Patrick, you just never used your intelligence appropriately.I'm smarter than you, obviously.But you could achieve so much more if you were by my side"
Patrick: 'You take pleasure from killing people, that's not clever, that's paranoia'
RJ: "So you say'
Patrick: 'So I say.I'm gonna kill you, and God is my witness.'
RJ: 'Look around you.The game is over and I won'
Then Michael starts to run, distracting the crowd while Jane chases RJ.He is wounded, so he can't run.Jane takes off a hidden knife and backstabs RJ, while the FBI/CBI arrive at the scene.PJ takes off RJ's mask and beneath, it's Partridge.He starts saying things about Jane's wife and daughter such as how they were dressed, how they smelled, that Jane's daughter was indeed sleeping and never was scared, that Jane's wife fought for her life and that she was the most difficult victim to bring down.Then he starts telling details about the way he was cutting them open.Patrick cries while listening all these, and strangles Partridge while he is ironically laughing.RJ finally dies and it immediately starts to rain.Jane gets on his knees, he cries and smiles at the same time, looking to the sky with his hands in the air.

Hope you enjoy.